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Conference Spotlight
2025 ANS Winter Conference & Expo
November 8–12, 2025
Washington, DC|Washington Hilton
Standards Program
The Standards Committee is responsible for the development and maintenance of voluntary consensus standards that address the design, analysis, and operation of components, systems, and facilities related to the application of nuclear science and technology. Find out What’s New, check out the Standards Store, or Get Involved today!
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Latest News
Japan gets new U for enrichment as global power and fuel plans grow
President Trump is in Japan today, with a visit with new Prime Minister Sanae Takaichi on the agenda. Takaichi, who took office just last week as Japan’s first female prime minister, has already spoken in favor of nuclear energy and of accelerating the restart of Japan’s long-shuttered power reactors, as Reuters and others have reported. Much of the uranium to power those reactors will be enriched at Japan’s lone enrichment facility—part of Japan Nuclear Fuel Ltd.’s Rokkasho fuel complex—which accepted its first delivery of fresh uranium hexafluoride (UF₆) in 11 years earlier this month.
Juan V. Koppel and James A. Young
Nuclear Science and Engineering | Volume 19 | Number 4 | August 1964 | Pages 412-417
Technical Paper | doi.org/10.13182/NSE64-A18997
Articles are hosted by Taylor and Francis Online.
A scattering kernel has been obtained for H2O which takes into account the anisotropic nature of the molecular vibrations, in contrast to the isotropic nature of the Nelkin kernel. Detailed comparison of both models shows that the anisotropic model gives 5 to 7 per cent better agreement with experiment.
